Concentration (0.5%+ is ideal), stability (liposomal delivery beats plain formulas), and complementary ingredients (vitamin C, niacinamide) make or break results
Vitamina C is a potent antioxidant that has the power to boost immune function, increase resistance to infection, protect against a wide range of diseases,and regenerate antioxidants,particularly the so-called master antioxidant: Glutathione
J Gerontol A Biol Sci Med Sci 78(1):7589 Fletcher ME, Boshier PR, Wakabayashi K et al (2015) Influence of glutathione-S-transferase (GST) Inhibition on lung epithelial cell injury: role of oxidative stress and metabolism
Some reports have also suggested the promotion of host glutathione synthesis by probiotic bacteria but the exact contributing factors are not known
NAC and glutathione synthesis Allen & Bradley (2011), Journal of Alternative and Complementary Medicine , found that NAC supplementation increased glutathione-related antioxidant markers, supporting its role as a precursor in the body's own glutathione production
